Training can never get you to a level of stress per par as actual fighting
I agree 100% When you take a big hit in training most likely your opponent will give you time if your bell is rung. On the street your opponent will see you this way and wade on in to finish you off.Big difference.
In boxing maybe, but in mma we're taught when we have our training partner stunned to keep coming and cover them but dial the power way way down while still keeping the pace and motion (or just clinch and transition to grappling) and so the aggressor learns to keep attacking a hurt opponent and the other guy learns to put up a defense and stay calm when they are hurt. Those instincts will still largely be there on the street because that training wires neural connections (what people call instincts) to do that without thinking.